Immigrationboards.com

Hi I'm applying for my british citizenship and I'm not sure which date to use for the day I entered the UK. I've lived here 3 times:
2005-6 on holiday maker visa
2009-2013 on tier 1
2015-now on Tier 2/ILR

Do I put the very first date that I arrived in 2005 or the date in 2015 which would be part of my qualifying time? I also have to give my passport with the date stamped for the 5 year period, so the day I entered in 2015 would make more sense than 2005. (I'll probably upload everything just like my ILR application).
Any help on this would be appreciated. I've read other posts and still am not sure.

Thank you!

2015 seems ok. Coincidence but not connected to your qualifying period.
You only need to upload what is required for the naturalisation application.

Thank you for your reply. It's not very straight forward the way they pose questions on these applications. I've read similar posts and there the advice was to go to the first date that you entered to live as the application asks to list all the immigration applications that I've made.